4-18
Chapter 4  Maintenance and Troubleshooting of this Device
Table 4-5.  
HART7
Indicator 
Display
Diagnostics 
Display Message
Description Countermeasures
Failure
Err.01
A-D CNV
Analog/Digital 
Conversion Failure
An error occurred during 
analog-to-digital conversion.
There is a problem with the 
sensor.
Contact customer service.
Err.02
PROM
Sensor 
Characteristic Data 
Failure
An error was detected in the 
sensor characteristic data.
Err.03
INPUT
Suspect Input Input data error
Err.04
CPU
CPU Failure CPU operation failure
There is a problem with the 
printed circuit board.
Contact customer service.
Err.05
NVM
NVM Failure Nonvolatile memory error
Err.06
RAM
RAM Failure RAM failure
Err.07
ROM
ROM Failure ROM failure
Err.08
OUTPUT
Output Circuit 
Failure
Output circuit failure
Err.09
CONFIG
Invalid Database
Configuration data and/or 
calibration data is invalid.
Function Check
OUTPUT%
OUTMODE
In Output Mode
The device is operating in 
Output Mode.
Exit from output mode
[blank]
F/A SIM
Failure Alarm 
Simulation Mode
The device is operating in 
Failure Alarm Simulation 
Mode.
Exit from failure alarm 
simulation mode
Out of 
Specification
AL.20
M/B. TEMP
Meter Body Over 
Temperature
Meter Body Over 
Temperature
Change the installation so 
that the temperature of the 
meter body falls within the 
specified range.
Alternatively, check that the 
temperature of the process 
fluid is not abnormal.
AL.24
OVRLOAD
Meter Body 
Overload or Failure
Meter Body Overload or 
Failure
- Confirm that the input 
pressure is within the 
specified range.
- If the input pressure is 
high, either lower the input 
pressure or, If neccesary, 
calibrate using a device with 
a large range.
AL.53
OUT%.HI
High Output 
Alarm
High Output Alarm
Check the output value
AL.54
OUT%.LO
Low Output Alarm Low Output Alarm
AL.55
TEMP.HI
High Sensor Temp. 
Alarm
High Sensor Temp. Alarm
Check the sensor 
temperature.
AL.56
TEMP.LO
Low Sensor Temp. 
Alarm
Low Sensor Temp. Alarm